more advanced on, for whatever reason in a given area, or even equally survivable, can a Species devolve to resemble a previous evolutionary stage? I guess in my mind I am thinking about whales and dolphins coming to resemble fish again. So my question is, how is it known that all hominids are becoming less apelike and more man like, and some are not examples of taking a step to more apelike features because for whatever reason, those features make him more survivable? (A heavy skull and brow ridge, for example)
2007-01-11
19:56:18
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Biology